van Manen and Oosterveld 



6000 



^ 5000 



ilOOO 



— 3000 



2000 



1000 X 



750 1000 1250 



Time in seconds 



Fig. 21 - Comparison of the stopping abilities of conven- 

 tional and contrarotating propellers for a tanker with a 

 Diesel engine which can be reversed at 15 rpm 



160 



